COVID-19 is brought on by SARS-CoV-2 from the coronavirus (CoV) household. CoVs are enveloped, positive-stranded RNA viruses with nucleocapsid, together with the SARS-CoV of 2003 and MERS-CoV of 2012. CoVs usually trigger respiratory diseases that could additionally have an effect on different organs, and people infected have a 2 – 14 day latency period, where sufferers are asymptomatic. This has made it much more durable to rapidly detect and stop its spread. As such, most nations have started implementing contact tracing, which is generally comprehensive all over the world now as seen below.
The director of the World Health Organisation is praising Thailand for being a successful mannequin of Covid-19 containment. This is a results of over forty years of investments by past and current governments to enhance the basic public well being infrastructure, together with recruiting public health volunteers. Thailand has initially appeared to have escaped the worst of the viruses, with fewer than 4000 cases in November 2020.
However, there was a sudden outbreak at a big seafood market in December 2020 and in order to curb the potential of a ‘second wave’ of infection, the government has instituted nationwide restrictions and closures will go into impact from Jan four to Feb 1. Public schools will be shut down for two weeks, and amongst those businesses affected are bars, nightclubs, boxing stadiums, cockfighting rings, therapeutic massage parlours, and gyms. This will be a partial lockdown to stop the new surge of infections. Shopping malls, restaurants, magnificence salons, swimming swimming pools and public parks stay open with strict social distancing pointers, but these guidelines may be tightened in areas like Bangkok and other massive provinces.
A vaccine is a kind of medicine that stimulates a person’s immune system to produce antibodies in opposition to the virus. There are numerous forms of vaccines, as proven within the table under, with some sorts still in improvement.
Interestingly, prior to the COVID-19 vaccines, there are not any approved mRNA or DNA vaccines, and neither has ever been tested in a large-scale medical trial for an infectious disease. Painless has been a fantastic opportunity for these technologies to be pushed.
As of third January 2021, there are three COVID-19 vaccine candidates which have been accredited by varied nations. The US Food and Drug Association (FDA) has approved Pfizer-BioNTech and Moderna, whereas the UK has approved the AstraZeneca vaccine as well. The Thailand authorities, however, now expects to take supply of two million doses of a COVID-19 vaccine potentially as early as February. Thailand has additionally signed a cope with AstraZeneca to buy fifty two million doses of the AstraZeneca vaccine. Furthermore, personal hospitals within the Kingdom are given permission to buy their own vaccine provides, as lengthy as the vaccine is approved by the Food and Drug Administration of Thailand.
There are at present greater than 50 COVID-19 vaccine candidates in trials worldwide, which are present process large-scale (Phase 3) clinical trials before allowed to be approved to be used.
Pfizer Vaccine
The first vaccine candidate against the virus was developed by Pfizer and BioNTech. On 31st December, the World Health Organization listed Pfizer and BioNTech’s COVID-19 vaccine for emergency use. Clinical trials show it to be greater than 90% effective in preventing COVID-19 in members with out evidence of prior SARS-CoV-2 infection within the first interim efficacy analysis.
Moderna Vaccine
The second vaccine permitted by the FDA is developed by Moderna and the National Institute of Allergy and Infectious Diseases (NIAID).
AstraZeneca Vaccine
The third vaccine accredited to be used within the UK is the Oxford-AstraZeneca, additionally made within the UK. The UK Medicines and Healthcare merchandise Regulatory Agency (MHRA) has authorised two full doses of the Oxford vaccine, with the second dose to be given four to 12 weeks after the first. A Bangkok-based Siam Bioscience signed an settlement with AstraZeneca in late November to make 200 million doses of the British pharmaceutical firm’s COVID-19 vaccine. This agreement will facilitate know-how transfer to increase the manufacturing of the AstraZeneca vaccine. The Thailand authorities will secure 26 million doses of the vaccine for the locals, and more than half of this 200 million doses might be exported abroad.
CoronaVac Vaccine
This vaccine originates from Sinovac Biotech in China and contains inactivated COVID-19 viruses. Similar to its AstraZeneca counterpart, it can be saved in a standard refrigerator at 2-8 levels Celsius. This is advantageous for use in developing nations which might not be able to store massive quantities of vaccine at such low temperatures. Thailand will obtain its first Covid-19 vaccines in February from Sinovac Biotech, numbering 200,000 doses. These first vaccines will go to the medical professionals, and shall be given to the remainder of the inhabitants in descending order of priority when the next 800,000 and one million doses of the Sinovac vaccine arrives by March and April respectively.
As with all vaccines, possible unwanted facet effects of both COVID-19 vaccines are injection web site ache, fatigue, headache, muscle pain, and joint ache. This just isn’t unique to the COVID-19 vaccine, as these side effects are widespread throughout vaccines, which is just an indication that the immune system is lively and producing antibodies to fight the unknown pathogens.
No long-term unwanted effects have been recorded, however observations are nonetheless ongoing as the primary batches of vaccines are rolled out. As for pregnant or lactating moms, preliminary animal studies show no signs of hurt to the mom or fetus, but that is yet to be examined in humans.
But regardless, it’s not a trigger for concern, as a end result of before the screening for COVID-19 vaccines earlier than use is a very rigorous process. Before vaccines can be delivered, the vaccines have to be confirmed protected and effective in giant (phase 3) clinical trials. Afterwards, there is a collection of unbiased reviews and an exterior professional panel convened by WHO to analyse other threat components for disease. Officials in particular person international locations resolve whether or not to approve the vaccines for national use and develop insurance policies for tips on how to use the vaccines in their country primarily based on the WHO recommendations.
COVAX is the vaccines pillar of the Access to COVID-19 Tools (ACT) Accelerator of the WHO. The COVAX Facility ensures international equitable entry to a vaccine, significantly defending well being care workers and people most-at-risk. Only then can we mitigate the general public health and economic influence of the pandemic.
Country-wide, individual governments have their very own system of allocation, whereas following the WHO’s tips for vaccine distribution. Generally, the tiering system is as follows:
Herd immunity is a concept that if enough folks get vaccinated, the inhabitants might be better protected because the virus can not spread as quickly. Given the high transmissibility of the virus, coupled with the excessive latency interval of 14 days for signs to look, curbing the spread of the virus is crucial.
While the vaccine will scale back one’s probability of getting unwell and afterwards hospitalized, there is nonetheless no affirmation yet whether or not being vaccinated prevents somebody from transmitting the virus. Hence, those that already have the vaccine ought to still put on masks and follow physical distancing, to forestall the virus from spreading airborne.
The virus can and can doubtless endure mutation, creating what we name a model new virus mutant or pressure. This occurs via recombination, when a virus spontaneously mutates its surface antigens, or when a number of viruses infect a single organism, and during the copy process, the genomes of two viruses combine. This means that great precaution still must be taken, and there’s no telling whether or not we might see a mutated COVID-19 strain..